Genetic Variant ARMCX5:p.Thr84Ile (chrX-102602392-C-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001168478.2(ARMCX5):c.251C>T(p.Thr84Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000917 in 1,210,024 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 49 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 3 hem., cov: 23)

Exomes 𝑓: 0.000098 ( 0 hom. 46 hem. )

Consequence

ARMCX5
NM_001168478.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.421

Variant links:

Genes affected

ARMCX5 (HGNC:25772): (armadillo repeat containing X-linked 5)

ARMCX5 links:

ARMCX5-GPRASP2 (HGNC:):

ARMCX5-GPRASP2 links:

ARMCX5-GPRASP2 (HGNC:42000): (ARMCX5-GPRASP2 readthrough) This locus represents naturally occurring readthrough transcription among the adjacent armadillo repeat containing, X-linked 5 (ARMCX5), G protein-coupled receptor associated sorting proteins 1 and 2 (GPRASP1 and GPRASP2), basic helix-loop-helix family member b9 (BHLHB9), and long intergenic non-protein coding RNA 630 (LINC00630) genes on chromosome X. Transcripts may make use of multiple alternative promoters and polyadenylation signals in this region. Readthrough transcripts may produce proteins identical to the proteins encoded by GPRASP2 or BHLHB9. [provided by RefSeq, Apr 2017]

ARMCX5-GPRASP2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.053840607).

BS2

High Hemizygotes in GnomAd4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARMCX5	NM_001168478.2 link	c.251C>T	p.Thr84Ile	missense_variant	Exon 4 of 4	ENST00000473968.7	NP_001161950.1	Q6P1M9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARMCX5	ENST00000473968.7 link	c.251C>T	p.Thr84Ile	missense_variant	Exon 4 of 4	2	NM_001168478.2	ENSP00000473737.2		Q6P1M9A0A0G2JLJ9

Frequencies

GnomAD3 genomes

AF:

0.0000268

AC:

AN:

112074

Hom.:

Cov.:

AF XY:

0.0000876

AC XY:

AN XY:

34240

show subpopulations

Gnomad AFR

AF:

0.0000325

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000376

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000328

AC:

AN:

182780

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67514

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000738

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000984

AC:

108

AN:

1097950

Hom.:

Cov.:

AF XY:

0.000127

AC XY:

AN XY:

363316

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000114

Gnomad4 OTH exome

AF:

0.000260

GnomAD4 genome

AF:

0.0000268

AC:

AN:

112074

Hom.:

Cov.:

AF XY:

0.0000876

AC XY:

AN XY:

34240

show subpopulations

Gnomad4 AFR

AF:

0.0000325

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000376

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000491

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000149

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.251C>T (p.T84I) alteration is located in exon 6 (coding exon 1) of the ARMCX5 gene. This alteration results from a C to T substitution at nucleotide position 251, causing the threonine (T) at amino acid position 84 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.94

CADD

Benign

3.0

DANN

Benign

0.90

DEOGEN2

Benign

0.027

T;T;T

FATHMM_MKL

Benign

0.047

LIST_S2

Benign

0.43

.;.;T

M_CAP

Benign

0.033

MetaRNN

Benign

0.054

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

L;L;L

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.86

N;.;N

REVEL

Benign

0.022

Sift

Benign

0.092

T;.;T

Sift4G

Benign

0.17

T;T;T

Polyphen

0.0010

B;B;B

Vest4

0.071

MVP

0.068

MPC

0.13

ClinPred

0.011

GERP RS

-0.70

Varity_R

0.055

gMVP

0.17

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over